Download 03. Thermodynamics GAE (complete)

Thermodynamics
Group Active Engagement (GAE)
Thermodynamics of Living Systems:
Bioenergetics, Metabolism, and Order
1. Tape defines your study group – sit with friends,
or make new friends. Share cell numbers, email
addresses, and potential meeting times (M-W) for
working on homework outside of class.
2. Pre-class attitude survey – due now on Monday 1/31
http://perg-surveys.physics.umd.edu/MBEXpre.php !
or connect via attitudes surveys link in course menu !
on class website.!
3. Diagnostic exam also now due on Monday 1/31.
4. Find 1st HW assignment “University Expectations” at
GAE assignment link on course menu. Due Friday 2/4
Imagine you were the first life form on
Earth 4.3 billion years ago
C & R 26.12
Living Systems and Thermodynamics Laws
1)  Organisms exhibit more energy transformations than
any non-living entity.
2)  Organisms exhibit more chemical reactions than any
non-living entity.
3)  Thermodynamics specifies the general rules for
energy transformations and chemical reactions.
4)  Genomes encode for the specific mechanisms,
namely the molecules, responsible for energy
transformations and chemical reactions in organisms
C & R 26.12
www.cosmographica.com
What are the potential energy sources available to life?
Bacterium Archaean
Protist
Plant
Fungus
Animal
fig.cox.miami.edu/~cmallery/150/scimeth/c1x11-domains.jpg
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Thermodynamics GAE
(Group Active Engagement)
Developing
skills
Group
dynamics
Conceptual models
for major principles
Biological energy flow;
thermodynamic laws
In-class smallgroup activities
Flow diagramming;
brainstorming
Group
homework
Apply for solving
problems
Learning objectives:
1) To assemble prior knowledge in order to construct flow
diagrams of energy flow through biological systems;
2) To identify the fundamental rules governing biological E flow;
3) To translate those rules into the formalism of thermodynamics;
4) To apply thermodynamics equations for describing biological
processes in class discussions and on group homework
Flow diagramming
of energy flows in
the biological world
1) Place the terms on
the flow charts in a
realistic sequence,
and connect the terms
with arrows.
2) Write consensus
charts in your in-class
worksheet.
Homework – Study group discussion (sometime Monday-Wednesday),
and individual writing (after that discussion and due Friday 2/4)
Energy flows in the biological world
Energy flows in the biological world
Instructions: Place these terms and add connecting arrows in the proper places in
the charts depicting biological energy flows. A term may be used several times.
Photosynthesis/respiration cycle:
Terms : ATP, CO2, glucose, heat, H2O, light, O2
Cyanobacteria; algal
and plant chloroplasts
Aerobic prokaryotes;
eukaryotic mitochondria
LIGHT
Oxygenic photosynthesis
HEAT
Common forms of cellular work:
Terms
heat
phosphorylated metabolites
electrical work
structural work
phosphorylated proteins
osmotic work
ATP
transport work
metabolic work
mechanical work
Explanations (do not write onto chart)
high-energy intermediates
membrane potentials, action potentials
polymerization – e.g., chitin, cellulose
often resulting in conformational changes
hydroregulation, transport, excretion
nutrient uptake, excretion
synthesis – e.g., amino acids, lipids, sugars
motor proteins – e.g., myosin, dynein
CO2; H2O
Cyanobacteria; algal
and plant chloroplasts
CO2; H2O
Glucose; O2
Glucose; O2
Aerobic prokaryotes;
eukaryotic mitochondria
HEAT
Aerobic respiration
ATP
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Energy flows in the biological world
HEAT
General features and
operating rules of
biological energy flow
HEAT
1. Small group discussion –
identify general features
and operating rules.
2. Write down features and
rules in your in-class
worksheet, and share them
in class discussion
We’ll discuss your rules in
Monday’s class
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